1 files changed, 6 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/basic/testChangingTypeDuringRecording.js b/js/src/jit-test/tests/basic/testChangingTypeDuringRecording.js
new file mode 100644
index 0000000000..5c6a576ca4
--- /dev/null
+++ b/js/src/jit-test/tests/basic/testChangingTypeDuringRecording.js
@@ -0,0 +1,6 @@
+X = { value: "" }
+z = 0;
+for (var i = 0; i < 20; i++) {
+    Object.defineProperty(this, "z", X);
+    z = 1;
+}